The stock cooling is NEVER enough! Our system has done better and better the more action we took to increase cooling. We now have A MAZE2 proc water block with the extra copper plate for the peltier sandwiched in between the waterblock and the copperplate that fits onto the cpu. This is a great looking and functional block. We also made a block for the Northbridge, and also one for the Radeon 9500pro video card. (Also put a heat sink on the Southbridge too!) We haven't tested with the pelt yet, the waterproofing is setting up currently but if my facts are in order, All of this cooling will allow this beast to ROCK on the speed subject. Will fill ya in later on the newest benchmarks with comparisons on the old temps and speeds.
Good luck and have a great week!